Lock.



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APPLICATION FILED DEC- I3, I9I3 1 l 34,791 Patented Apr. 6, 1915.

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G. WIITALA.

LOCK. l APPLICATION FILED DEC. I3, I9I3. 1 ,134,7 91 Patented Apr, 6,1915.

3 SHEETS-SHEET 2'. 1547.4.

THE MORRIS PETERS C0.. PHOTO-LITHO.. WSHINGYUN. D. C.

G. WIITALA.

LOCK.

APPLICATION FILED DEc. I3, 1913.

1,1 34,?91 Patented Apr. 6, 1915.

. EETS 3 SH SHEET 3.

53 m I E4 j, L'

l /I 7 I III/@III UNITED sTATEs PATENT oEEioE.

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Specification kelf:Letters Patent.

Petentel'epr. e, 1.9115.-

eppneaeon exea. December.: 1e, me. enel Negotiate T0 all whom t mayconcern:

Be it known that I, Gns'r WIr-rena, a-

Citizen 0f the Unitedl States, 'residing et 01.1: l

before the latter may be moved to uncever the keyhole so'that thekey maybe intro. duced into the lock.

The invention further provides a lock embodying a supplemental lockbolt` which is adapted to be actuated by means of a spin,- dle, saidspindle being accessible and operable only when the guard is moved toapredetermined position so as to uncover a nger piece which automaticallyspringsl into position to be conveniently grasped, for` throwing thesupplemental lock bolt, When the supplemental lock bolt is shot intolocking position itis absolutely necessaryA toi throw the same beforethe part to which the lock is attached may be opened even., though themain lock bolt is thrown. The supplemental lock bolt is adapted to beoper-y ated by means of a spindle forming a part of the lock mechanismin contradistinction A to the main lock bolt which is key operated.

The invention consists of thenovel feaf tures, details of constructionand :combina-n tion of parts, which hereinafter will be moreparticularly vset forth, illustrated in the aecompanying drawings andlpointed *out inv the appended claims.

Figure l is a view in elevation o f a lock embodying the invention. Fig.2 is a side view of the lock with the guard plate moved so as to uncoverthe keyhole. Fig. 3 a view similar to Fig. 2 showing the guard platemoved farther so as to expose the iin-V ger piece, whereby the spindleis operated for throwing the supplemental lockbolt. Fig. 4 is a view inelevation having the re-.

movable plate closing the open Aside of the.

lock case omitted. Fig. 5 is `a transverse section on the line 5445 ofFig. 4. Fig. 6 l

is a horizontal .SCCtionlon thelin'e ,ffof

l Fig. 4. Fig. 7 is a detail view the side`,

plete eff thelel eeeef Showing the keyhole,

the key elberliiellfl elevetiee and the pree- Sule. bleek 'held.yielding-ly eeanet tle 'Het Sides eflthe lrev erhellt-,te held' .theSemefi Dermal position? AFla ieee detailveiv eff e pertefthegeelilrlete' having the reeeee ferreeeivrie the .raised par-t ef the,leek Pin tumbler'.- ensl .hevige the eblene @peiling inwheh theleek. pieeleeratee-` 'Fie 9 ie e vienT in elevation of the reverse Side of theleek, Pie-tumbler ehewing .theratehef end they vielflable detente feeeeperaten with they .leek eine Fig l0? ie en enlarged seetifen en theline 23e-Zeef. Fi-g- 8f Fia '11 is 'all enlarged, Seetene the-line2li-2e el Fig- 1 0f ene eide elf-the' leekv @eee and the parteattachedjthereto. Figy 1 2 .is an enlarged.

View eef ehe. ne; pm tumbler sawing. the lock ,pin in section `and thepressure blocks fozrftaining suchlock pin-"in the desired `reeitelue'lue 131e an enlarged. eeeten .en

to in thefollowing description and 'indi-f cated' in all .the vewe elfthefflrevlnse-by theeeme refereeeeeheeeetere- The lmeneer-el sleegneteeVthe `leek eeee Wheh heueee the.l Werking vleerte eed which lmay be. of4,con.structioni yor finish cac- Cereerendingfeed like parte ererefelveel` cordingtothe character of the lookin merketelele feirli.-'Qhefede O fftheleek ease is eren. te admit 0f. eeeeee tothe interiorthereof for P leeinel theywerfkeg Perte in. position er t0 admit 0feeeeee te eueh parte for repairs. A plate closes the open side ofthelcase. The keyhole is formed in the Sideplateeef the eeee and Seelkevhele hee. its eye enlarged toreceive the reduced end 4 ofthe keyerber '5, the letter beine ieurnele-el. in the Side Plates ef the ease'here ins epreelte Side Portions '0f its rounded ende eet ewev te fermflat feees @against Wheh Pressure, b1eeke7 ere edeptefl te beer .e0 aete .hel-el the ker erborie normal peeitien-` Tlle Pressure bleekei? eeWell eetlief .Springe 8 are leeeteel in reeeeeee 9 ferme@ in the eaterfaeee ef the .eide platee ef.-Y the leek case.Y The body portion of .thekey arbor lite 'betivfeen the eide riletee ef "the" leek eeee .end hee@elet elena ene Side. for the Passage,

of the nib,u of the key, said passage corresponding with the slotof thekeyhole 3., Theniain look boltlO is `preferably located in ,thev lowerportion kpf the lock case and 'is adapted to be thrown ymeans of .alkey.

The ,eerrileieeetalleelf belt!! ie leeetetl in ico the upperiportion ofthe .lock case and is adapted to be thrown by means of a spindle l2which is journaled at its'ends in the side plates of the lock case, saidspindle havingl a toothed portion 13 in mesh with a toothed portion 14of the lock bolt. T he inner end of the lock bolt 11 is supported anddirected in its movements by means of a post 15. The spindle 12 isformed with a centrally disposed longitudinal opening in which a pin 16is adapted to move, said pin having a head at its inner end againstwhich an eX- pansible helical spring 17 exerts a pressure to force thepin 16 outward. A finger piece 18 is connected with the outer end of thepin 16 and serves as means for rotating the spindle when it is requiredto throw the bolt 11 either into locked position or to retract the same.The pin 16 formed at its inner end with a. head is of noncircular formin cross section which operates within the spindle and causes it torotate when the pin is turned. The finger piece 18 normally occupies aposition in a recess 19 formed in a cover plate 2O arranged eX- erior tothe side plate 2. A guard plate 21 arranged exterior to the cover plate20 is intended to conceal the keyhole and extend over the linger piece18 and hold the same repressed against the action of the spring 17.vWhen the guard plate 21 is moved so as to clear the linger piece 18, asindicated in Fig. 3, said finger piece springs outward into a convenientposition to be grasped so that the spindle 12 may be turned to admit ofthrowing the supplemental lock bolt in either position. tion it isarranged with the open side facing outward and the closed side facinginward or located adjacent the door or like part to which the lock isattached. It follows therefore that the guard plate 21 is locatedagainst the outer side of the lock case. The inner cover plate 20extends over the recess 9 and the parts 7 and 8 located in such recess.rIhe usual keyhole guard 22 is pivoted to the plate 20.

The guard plate 21 is movable on the lock Case and carries a lock pin 23which is arranged to operate in a slot formed in the outer cover plate20. The lock pin 23 is provided at its outer end with a knob 24 and itsinner end is formed with a head 25 which is arranged toA operate in arecess 26 formed in the outer side of the plate 2. The recess 26conforms approximately to the outline of the slot formed in the plate20. This slot comprises a longitudinal portion 27, a vertical portion 28at one end thereof and an off-set portion 29 at the oppositek end. Theoff-set portion 29 of the slot is located at the inner end and isinterrupted by means of a projection 30. r1`he guard plate has acircularl recess 31 in its outer side and a vertical elongated opening32 TVhen the lock is in posi-r which is adapted to register with thevertical portion 28 and an olf-set portion 29 of the slot formed in the"plate 20. The lock pin 23 passes through the opening 32. A tumbler 33 ismounted upon the guard plate 21 and has a raised portion fitting withinthe circular recess 31, said raised portion having teeth 31 around itsouter edge to be engaged by means of a dog 35 located upon the plate 21at one side of the recess 31. An elongated opening 36 is formed in thetumbler 33 and receives the lock pin 23 which passes therethrough. Whenthe tumbler 33 occupies a position with its opening 36 in register withthe opening 32 and the vertical portion 28 of the slot formed in thecover plate 20 the lock pin may be moved so as to aline with thelongitudinal portion 27 of the slot, thereby admitting of the guardplate 21 being moved so as to uncover the keyhole as indicated mostclearly in Fig. 2. When the lock pin 23 reaches a point to engage withthe projection 30 the keyhole 3 is uncovered but the finger piece 18remains hidden from use. To disclose the finger piece it is necessary tomove the lock pin 23 upward in the off-set portion 29 of the slot thenceover such projection and again downward in the rear thereof, and duringsuch movement the guard plate traverses a distance to uncover the fingerpiece 18 which springs outward from the recess 19 into position to beconveniently grasped for rotating the spindle 12 for throwing the bolt11. The finger piece 18 is oblong and the recess 19 is of correspondingshape hence when the finger piece is held within the recess 19 thespindle 12 and lock bolt 11 are held secure against movement. lVhen theguard plate is in the position indicated in Fig. 1 and the knob 24 ismoved to aline with the tumbler 33 the lock pin 23 occupies a positionat the upper end of the vertical portion 28 of the lock pin slot andupon turning the tumbler 33 to throw the opening 36 out ofline with theopening 32 the lock pin is retained in the upper portion of the slot 28thereby preventing any movement of the guard plate. As indicated mostclearly in Fig. 1 an indicating mark is provided upon the guard plate 21adjacent the recess 31 and the edge of the tumbler bears a plurality ofmarks one of which when brought in line with the indicating mark on theplate 21 brings the opening 36 of the lock pin tumbler 33 in registerwith the opening 32 so that the lock pin may be moved from the verticalportion into the horizontal portion of the lock pin slot preliminary tomoving the guard plate inward or uncovering the keyhole and the iingerpiece of the spindle supporting pin 16. The lock pin 23 is held ateither end of the vertical portion 28 of the lock pin slot by means ofyieldable detents 37, the latter consisting of short bars located uponopposite sides of the opening 36 and held pressed outward toward eachother by means of springs 38. Each of the detents 37 is formed upon itsouter side with a projection 39 which slopes in opposite directionstoward the ends of the detents. The projections 39 extend inward beyondthe vertical edges of the opening 36 so as to engagethe lock pin 23 andhold it in the required position until sufficient force is applied tomove the lock pin in the opening 36 by the projections 39.

It will be understood from the forego' ing taken in connection with theaccompanying drawings that there is a mutual cooperation between thespecific form of key and the particular form of lock mechanism and thateach is dependent upon the other for successful operation of the lock.It being assumed that both the main and supplemental lock bolts areprojected and it is required to open the lock pin tumbler 33 is turneduntil the proper indicating mark comes opposite the indicating mark onthe guard plate, thereby bringing the opening 36 in register with theopening 32 after which the knob 2li is pressed downward to carry thelock pin 36 from the upper end of the vertical part 28 of the lock pinslot into the lower end of such slot in line with the horizontal part27. The guard plate 2l being released may be moved inward, the lock pin23 traveling in the horizontal portion 27 of the lock pin slot. lVhenthe lock pin strikes the projection 30 the keyhole of the lock isuncovered. If it be desired to first withdraw the supplemental lock boltl1 the lock pin is moved upward in the ol'set pory tion 29 of the lockpin slot thence along the 0H set portion 29 of the lock pin slot anddown in rear of the projection 30. This brings the guard plate into theposition in- Y dicated in Fig. 3 with the finger piece 18 of the spindleoperating pin 16 in position to be grasped and by rotating the spindlethe lock bolt ll is withdrawn.

Having thus described the invention what is claimed as new, is

1. In a lock, the combination of a lock bolt, a. spindle for throwingthe lock bolt, spindle operating means adapted to be moved outward orpressed inward, a spring normally exerting a pressure upon the spindleoperating means to throw the same outward, a guard adapted to extendover the spindle operating means and hold the same pressed inward, andlocking means for securing the guard.

2. In a lock, the combination of a 'lock bolt, a spindle for throwingsuch bolt, a finger piece for operating the spindle and adapted to bemoved outward or pressed inward, a spring for pressing the finger pieceoutward, means for engaging the :linger piece when pressed inward toprevent rotation thereof, a guard for holding the `linger piece inwardand means for `securing such guard.

3. In a lock, the combination of a lock bolt, a toothed portion formedon said lock bolt, a spindle, a toothed portion formed on said spindlein mesh with the toothed porl tion of the lock bolt, actuating means forthe spindle' having a sliding connectionV therewith, a` spring normallyexerting a pressure to throw the spindle actuating means outward, andmeans engaging thev spindle yactuating means for sealing and holding thesame pressed inward.

4. In a lock, the combination of a lock case comprising a plate having aslot comprising longitudinal portions, a guard plate slidable upon thelock case and having a vertically elongated opening, a lock pin passingthrough the opening of the guard plate and the slotin the plate of thelock case, a rotary tumbler mounted upon the guard plate and having anoblong opening to register with the opening of the guard plate, and theslot in the plate `of the lock case and a lock pin passing through theopenings of the tumbler and guard plate and slot in the plate ofthe lockcase, said lock pin being held in locked engagement with the guard plateand plate of the lock case by means of the tumbler.

5. In a lock, vthe combination of a lock case embodying a plate having agroove therein, a projection. a cover plate having a slot which isprovided at one end with a vertical portion and at its opposite end withan off-set portion into which extends said projection, said slot beingarranged opposite the groove in the plate of the lock case, a guardplate slidable upon the cover plate and having a vertically elongatedopening to register with the vertical portion of the slot in the coverplate, a lock pin passing through the opening of the guard plate and theslot of the cover plate andra rotary tumbler mounted upon the guardplateand having an elongated opening to receive the lock pin.

6. In combination, a lock having main and supplemental lock bars, one ofsuch lock bars being key operated, a manually operable spindle forthrowing the other lock bolt, a guard plate for covering the key holeand the said manually operable spindle, and locking means between theguard plate and lock casing ladapted to be intermittently op-v erated toarrest the movement of the guard plate when first moved to uncover thekey hole and adapted to admit of a further movement of the guard plateto uncover the said manually operable spindle.

7. In combination, a lock comprising a lock case having a side plate inwhich is 'formed a recess, a projection, a cover plate having alongitudinal slot provided at one end With a vertical portion and at itsopposite end with an oit-set portion into which extends said projection,a guard plate slidable on the cover plate and having a verticallyelongated opening, a look pin passing through the opening of the guardplate and slot of the cover plate, a head at the inner end of the pinarranged to operate in the recess in the side plate of the lock Case, aknob at the outer end of the lock pin and rotary tumbler mounted uponthe guard plate and having an elongated opening to receive the said lockpin.

1n testimony whereof I aiiiX my signature in presence of two Witnesses.

GUST WHTALA. Witnesses:

A. A. loIvoNEN, LAWRENCE J. MALONEY.

C'opies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washingtom-ID. CJ?

